so if im gonna think about selling my boat i have to finally fix some things that i never really cared about, i upgraded the stereo all myself, and i have a huge nest of wires next to my battery in a pile, what would you do to fix this problem?

and more importantly i have all the speaker wire/sub wire running under my cushions all along around the boat. Last year i tried just using colored duct tape to tape them up on the fiberglass so they were totally hidden, looked really clean, but of course the heat made the tape come right off...

what can i use to stick the wires to the fiberglass so they dont hang to the floor?